Bug 2025345 - [5.12 regression] nouveau: ce: ucode exceeds falcon limit(s)
Summary: [5.12 regression] nouveau: ce: ucode exceeds falcon limit(s)
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 35
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2021-11-21 20:51 UTC by Dominik 'Rathann' Mierzejewski
Modified: 2021-11-21 23:14 UTC (History)
18 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed:
Type: Bug

Attachments (Terms of Use)
kernel-5.14.18 dmesg (79.60 KB, text/plain)
2021-11-21 20:51 UTC, Dominik 'Rathann' Mierzejewski
no flags Details

System ID Private Priority Status Summary Last Updated
freedesktop.org Gitlab drm nouveau issues 91 0 None closed [GF108M] MMIO FAULT and ce: init failed on 5.12-rc8 2021-11-21 20:51:52 UTC

Description Dominik 'Rathann' Mierzejewski 2021-11-21 20:51:52 UTC
Created attachment 1842908 [details]
kernel-5.14.18 dmesg

1. Please describe the problem:
After upgrading to kernel 5.12.x, I started getting these errors in dmesg:
[    4.070813] kernel: nouveau 0000:01:00.0: ce: ucode exceeds falcon limit(s)
[    4.070815] kernel: nouveau 0000:01:00.0: ce: init failed, -22
[    4.070818] kernel: nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 10312c [ PRIVRING ]
[   48.235115] kernel: nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 103048 [ PRIVRING ]

2. What is the Version-Release number of the kernel:
All kernels starting from
and up to

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :
Yes. The errors are not present under 5.11.21-300.fc34.x86_64 or earlier.

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:
Yes. Boot the system with 5.12.x or newer kernel.

5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:
No. It seems to be fixed in 5.16-rc1. Upstream bug report says the same.

6. Are you running any modules that not shipped with directly Fedora's kernel?:

7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.

Comment 1 Dominik 'Rathann' Mierzejewski 2021-11-21 23:14:48 UTC
FWIW, kernel-5.15.3-200.fc35 from koji doesn't show these errors, either.

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